Website readiness profile · Snapshot 23 October 2026

starto.jp

starto.jp's public homepage, certificate and DNS checked against 31 practices and compared with 536 Entertainment & Video Streaming sites.

Readiness index: 45/100
Ahead of: 9%
Practices observed: 12/31
Popularity band: Top 50K

Measured 2026-10-23 11:55:39 UTC from one location. How we measure

Readiness by lane

Green: starto.jp. Thin bar: Entertainment & Video Streaming peer median.

Enable

74/100

Peers 80

Harden

38/100

Peers 52

Accelerate

28/100

Peers 60

Recover

0/100

Peers 12

Priority fixes for starto.jp

Ordered by impact and by how common each practice is among peers.

Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (157 KB) was delivered without gzip, Brotli or zstd compression.
Why it matters: Compression usually shrinks HTML several times over, so the first bytes of the page arrive sooner on slow connections.
What to do: Enable Brotli or gzip for text responses (HTML, CSS, JavaScript, JSON, SVG) at the CDN or origin.
On Amazon CloudFront: Enable Compress objects automatically on the cache behaviour.
92% of Entertainment & Video Streaming peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Guide: How to Set a Website Performance Budget That Teams Can Keep
Priority 2 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
71% of Entertainment & Video Streaming peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 3 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 0 seconds, short of the 30-day benchmark.
What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
46% of Entertainment & Video Streaming peers do this.
Guide: Browser Caching Guide for Website Owners
Priority 4 · Harden
HSTS kept for at least a year
Observed: The homepage response did not include a Strict-Transport-Security header.
What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.
On Amazon CloudFront: Attach a response headers policy with Strict-Transport-Security to each distribution.
31% of Entertainment & Video Streaming peers do this.
Guide: HTTPS and TLS Guide for Website Owners

What starto.jp already does well

Practices fewer than half of Entertainment & Video Streaming peers use.

HTTP/3 advertisedHTTP/3 advertised.34% of peers

What we saw

Homepage checked: https://starto.jp/
Homepage response: HTTP 200
TLS: TLSv1.3, HTTP/2
Certificate: Amazon, 197-day validity, expiring 2027-03-23
CDN or edge: Amazon CloudFront
DNS operators: Amazon Route 53
DMARC policy: p=none
Homepage HTML: 157 KB, uncompressed
Images on homepage: 108 (jpg 63, svg 24, png 21)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

Amazon CloudFront (cdn and edge platform)Amazon Route 53 (dns operator)Amazon (certificate authority)Service guide: AWS (Amazon Web Services)

All 31 checks

Select a gap for the method and fix. How each check works

Not observed 19

Observed 12

HTTP requests move to HTTPS
TLS 1.3 negotiated
Certificate has more than 14 days left
HTTP/2 negotiated
HTTP/3 advertised
robots.txt published
Canonical URL declared
Meta description written
Mobile viewport configured
Social preview image set
Page language declared
At most one redirect to the homepage

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Live status for this site: Status Is Down: starto.jp. This profile covers configuration only.

Compare with other Entertainment & Video Streaming sites

Entertainment & Video Streaming readiness benchmark